Home / 1,221,350.40-1,833,775.20-689,909.40

Finding the Fourth Proportional to 1,221,350.40, 1,833,775.20 and 689,909.40

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Solution

The fourth proportional to 1,221,350.40, 1,833,775.20 and 689,909.40 is: 1,035,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,350.40 : 1,833,775.20 = 689,909.40 : x
  2. Step 2: Convert to fraction form
    1,221,350.40/1,833,775.20 = 689,909.40/x
  3. Step 3: Cross multiply
    1,221,350.40x = 1,833,775.20 × 689,909.40
  4. Step 4: Simplify right side
    1,221,350.40x = 1,265,138,747,966.88
  5. Step 5: Solve for x
    x = 1,265,138,747,966.88/1,221,350.40
  6. Step 6: Final answer
    x = 1,035,852.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.